This implies that you didn't loosen and retorque or remove, lube and
retorque. When you try to torque a nut that's settled you are overcoming
the stiction of the threads. You'll have to exceed torque specs to get it
to begin moving.
-----Original Message-----
From: n197tr4@cs.com [mailto:n197tr4@cs.com]
Sent: Tuesday, February 11, 2003 9:34 AM
To: gasket.works@gte.net; FOT@autox.team.net
Subject: Re: Retorquing head gaskets
I have never had a problem with copper gaskets where the mating surfaces
were correct. Attempt to retorque resulted in little or no motion on the
torque wrench. Of course my sample size is somewhat limited.
Joe (A)
>Not being an engineer by profession...
>
>Steve: you have a better engineering mind than I... So, if you are
>befuddled then I am concerned....
>
>I'll give you my thoughts... the very definition of "re-torquing"
>indicates that the original torque/clamping force has changed. Why would
it
>change.... I suspect that composition gaskets of anykind may "settle"
and
>compress. Maybe as the engine heats up and expands the only thing that
can
>actually change is the gasket thickness and hence it gets
>squeezed/deformed to a new thickness never to completely come back to
>original. Not so with copper HG's. I have never re-torqued with
>copper. M. Dunst Gasket Works USA, LLC
>626.358.1616 voice/page
>626.358.7971 fax
>www.headgasket.com
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